Washing and cleaning composition



-' Patented New 30, 1943 'uui'rso STATES PATENT OFFICE WASHING AND CLEANING COMPOSITION Anton ,Volz, Ludwigshafen-on-the-Rhlne, and Rudolf Watzel, Mannheim, Germany; vested in the Alien Property Custodian No Drawing. Application March 18, 1940, Serial No. 324,722. In Germany March 18, 1939 11 Claims. .(Cl. 252-109) acid' with or without cooling. Quantity and water these bodies form insoluble or lightly solu ble calcium and magnesiumsoaps, reducing the foaming and washing power of the soap, and moreover attacking the washed goods by deposition of soaps of the alkaline earths. Also with toilet soaps the lime soap deposition is inconvenient, involving not only a'higher soap con effect, but afiecting also the skinof sensitive persons.

Eflorts have been made in order to eliminate this disadvantage, by adding to the .washing'and cleaning agents water-soluble salts of phosphoric acids poorer in water than orthophosphoric acid, especially alkali metal metaand polyphosphates, thus preventing the lime soap formation and consequent damages. But the addition of said salts, especially sodium salts, to liquid soaps brings another disadvantage: theturbidity point is-thereby essentially raised, and the obtained solutions are not clear'owing to anexchange'of ions and conversion of the liquid potash soaps into sodium soaps. The incorporation of potassium salts, however, causes technical difficulties, as the latter are slightly soluble and make the solution turbid. It has been found that these disadvantages of the above mentioned potassium and sodium salts of phosphoric acids can be eliminated by incorporating products which form from simple .aliphatic amines or those, the alkyl group of which is substituted, for example by hydroxyl, aryl,

proportion may also be varied. The resulting acid products may be adjusted neutral oralkaline by an excess of amine or by addition of alkali or ammonium hydroxide. Instead of monoethanolamine other substituted amines, for example diand triethanolamine and the corresponding propanoland butanolamlnes, or quaternary ammonium compositions may be applied, and instead of metaphosphoric acid subphosphoric acid,-pyrophosphoric acid or polyphosphoric acid may be used.

Example 1;Add to a liquid potash soap with about 15% fatty acid 5 or of the product resulting from reacting 110 g. of monoethanolamine with 80 g. of anhydrous phosphoric acid.

The obtained soap has a good foaming power and reduced tendency to form calcium deposits. It resumption with imperfect, insufflcient cleaning mains clear even at temperatures about the freezing point. 1

Example 2.-Add to a liquid potash soap with about fatty acid 10%: of the aminephosphate, prepared as in Example 1, and 10% of sodium aralkylor cycloalkyl groups, if brought to reaction with phosphoric acids poorer in 'water than orthophosphoric acid. In this way solid, semisolid or liquid soaps or their solutions are obtained, according to theconsistency of the initial products employed. The aqueous solutions of such washing agents have not only the quality of remaining liquid even at very low temperatures, but, in addition to that, of having improved foaming power and reduced tendency to form calcium deposits. Products as claimed by the present invention form, when reacting for instance 110 g. of

monoethanolamine with 8 0 g. of metaphosphoric hexametaphosphate. A soap solution is obtained.

which even at low temperaturesdoes not become turbid and shows an excellent washing and foaming power as well as reduced tendency form calcium deposits.

Example 3.-Stir g. of polymeric metaphosphoric acid under cooling into com. of a 33% aqueous solution of polymeric metaphosphoric acid. By addition of alcohol the end product is precipitated from the so obtained clear, viscous solution in form of a white, syrupy mass. Neutralization follows in the usual manner with either alkali lyeor amine. The ,obt'ained'product is then incorporated'into the soap.

Instead of adding aminephosphate and alkali I metal phosphate subsequently, the latter for example may already be added at the manufacture of soap, and the product formed from phosphoric and substituted amines may be incorporated afterwards or inversely. Theseparately prepared soap solutions may also be mixed with the new products on the one hand and with the alkali metal salts of phosphoric acids poorer in water than orthophosphoric acid on the other hand.

It has formerly been tried to obtain lime- 'dissolving products by. addition of ethanolamine to sodium hexametaphosphate-containing soaps.

The desired eflect did not appear.- It is therefore obvious that the emciency of the new prod- What we claim is:

1. A washing and cleaning composition which does not produce deposits and turbidity in hard waters, comprising a potassium soap in which is incorporated the reactionproducts resulting from the reaction between phosphoric acids, containing less water in the molecule than.orthophos-' phoric acid, and aliphatic amines, selected from the class consisting or the simple aliphatic amines and aliphatic amines substituted with 'hydroxyl, aryl, aralkyl and cycloalkyl groups.

- 2. A washing and cleaning composition which does not produce deposits and turbidity in hard waters, comprising a potassium soap in which is incorporated anorganic amine salt oi! a phosphorlc acid which contains less water in the molecule than orthophosphoric acid.

' 3. A washing and cleaning composition which does not produce deposits'and turbidity in hard waters, comprising a potassium soap in which is incorporated an organic amine salt or a phosphoric acid which contains less water in the molecule than orthophosphoric acid, as well as a sodium salt of sucha phosphoric acid.

4. The product 01 claim 2 wherein said organic amine salt is the monoethanolamine salt of said phosphoric acid.

5. The product of claim 3 wherein said organic amine salt is the monoethanolamine salt of said phosphoric acid. p r 6. A process of producing potash soaps which do not'give rise to deposits and turbidity in hard,

phosphoric acid, is incorporated into a potash soap.

assesses '7. A process of producing potash soaps which do not give rise to deposits and turbidity in hard I also to liquid soaps, lime soap-preventing meta- I phosphates. I

water, characterized by the ieature that a reaction, product of a simple, unsubstituted aliphatic amine with a phosphoric acid,- which is poorer inwater than orthophosphoric acid, is incorporated into the potash soap.

8. A process of producing potash soaps which do not give rise to deposits 'and turbidity in hard water, characterized by the feature that a reaction product of a phosphoric acid, which is poorer in water than orthophosphoric acid, with an aliphatic amine, selected from a class consisting of the simple aliphatic amines and aliphatic amines substituted with hydroxyl, aryl, aralkyl cycloalkyl groups, is incorporated into a'potash soap.

9. A process of producing potash'soaps which do not give rise to deposits and turbidity in hard water, characterized by the feature that a reactionproduct of monoethanolamine with a phos-' phoric acid, which is poorer in water than orthophosphoric acid, is incorporated into the potashsoap.

10. A process of producing potash soaps which do not give rise to. deposits and turbidity in hard water, characterized by the feature that a reaction product of an aliphatic amine with aphosphoric acid, which is-poorer' in water than orthophosphoric acid, as well as a sodium salt of such a phosphoric acid are incorporated into a potassium soap.

11. A washing and cleaning composition which does not produce deposits and turbidity in hard waters, comprising a liquid potassium soap and the reaction products resulting from the reaction between a phosphoric acid, which contains less water in the molecule orthophosphoric acid and monoethanolamine', I

ANTON VOLZ.

RUDOLF WA'T'ZEL. 

